Removable construction



C. FR'EGONARA.

REMOVABLE CONSTRUCTION. APPLlCATlON FILED JULY K1920- 1,393,996, Patented Oct. 18, 1921.

2 SHEETS-SHEET I.

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C. FREGONARA.

REMOVABLE CONSTRUCTION. APPLICATION FILED JULYT, 1920..

1,393,996. Patented 001;. 18, 1921.

2 SHEETS-SHEET 2- MENTOR: KHABLES EmwmA.

UNITED STATES CHARLES FREGONARJL OF LYON, FRANCE.

REMOVABLE CONSTRUCTION.

Application filed July 7, 1920.

To all whom it may concern: 7

Be it known that I, CHARLES FREGONARA, a subject of the King of Italy, and resident of Lyon, Fra ce, have invented certain new and useful mprovements in Removable Constructions, of which the following is a specification.

The present invention relates to removable constructions formed of rigid elements connected by means of bolts, said elements being out out from iron sheets of more or less thickness and according to a reduced number of diflferent models.

Such elements are more particularly intended for manufacturingmoys for children; however they may be made larger for being used in the construction of trusses or metal buildings of any kind, bridges, supports and the like.

According to the present invention the main elements are of varying shape; they may be V shaped, triangular, rectangular with two diagonals and the like or generally V shaped or of a shape deriving from this shape with the further characteristic feature that one at least of both branches of every V terminates in a lateral outwardly directed projection in which a hole or eye, somewhat distant from the axis of the branch, is provided.

With these main elements may be combined straight accessories, elements, longrons and cross pieces, angle plates, stirrups, bars, pulleys, hooks and the like, wherebyv a great number of various constructions may be mounted.

The accompanying drawings show by way of examples, some models of main elements and accessory ones, and in said drawings:

Figures 1 to 4 show in elevation V shaped and triangular shaped elements.

Fig. 5 is an elevation of a connection of triangular elements;

Fig. 6 shows in elevation a connection of a V shaped and a triangular element.

Fig. 7 is an elevation of a rectangular element;

Figs. 8 and 9 show elevations of a longitudinal bar and a cross bar;

Fig. 10 shows a plan view of a polygonal connection composed of a series of elements.

Element a of Fig. 1 is n shape of a V Specification 01' Letters Patent.

Patented Oct. 18, 1921'.

Serial No. 394,446.

the two arms of which are provided attheir free ends with outwardly directed projec tions each provided with a hole or eye Z, the center of which is at a distance m from the axis ma"i of the corresponding arm. At the apex of the V is also provided a hole or eye 2 the center of which is at a distance at from axis 00o2, for instance at the other side than the eye Z. The distances m and n are such that the algebraical sum m+n 1s at least equal to the width of the arm. It results therefrom that, when two of such elements are connected (Fig. 5) the two adjacent arms are superposed by their edges or the latter are at a slight distance from each other.

"This arrangement results very important in toys because in the sketches showing the connections to be effected by the child, the various elements are shown separate from each other and consequently very comprehensible for the children.

Element 6 (Fig. 2) differs from element 8 of Fig. 1 in that the ends of the arms are connected by a cross; bar 3. Instead of having both arms inclined, one of them may be vertically directed as in Figs. 3 and 4. One only of the two arms may be pro vided with a lateral projection.

By connecting a V shaped element with a triangular one by means of bolts, a lozenge (Fig. 6) may be obtained.

Element 0 (Fig. 7) may be considered as formed by the combination of two elements Z) disposed in opposite directions and connected by the apex and by means of two straight elements 4 connecting the bases, the whole forming a rectangle with its two diagonals. The lateral projections of elements 6 are also projecting upon the larger sides of the rectangle.

By means of accessory elements such as longitudinals d (Fig. 8) and cross bars 0 (Fig. 9) of various lengths it is easy to make use of the main elements herein before described for performing an unlimited number of constructions of the most varying shapes. By way of example Fig. 10 shows a polygonal connection one half of which is of the hexagon type, the other one of the dodecagon type.

It is obvious that the various elements may be formed of any convenient material and have any desired dimensions, that the angles formed by the arms of the V shaped elements may have any size and that the straight elements may be provided with any number of holes of any desired shape, round, oval, square or the like, in order to be easily connected with each other.

Having now fully described my said invention, what I claim and desire to secure by Letters Patent, is:

1. Rigid elements for building removable constructions comprising a V shaped or angular piece, outwardly directed projections at one of the free ends of said elements, an eye provided on said projection for receiving the bolt connecting said element with the adjacent one, an eyeprovided on the apex of the V shaped element for receiving a connecting bolt, the algebraic sum of the distances between the center of both said eyes and the axis of the corresponding arm being equal or somewhat larger than the width of said arm.

2. A building structure comprising a series of triangular-shaped elements having apertured base extensions and apex, said apertures in the base extensions in relation with the aperture in the apex being spaced apart a distance equal to the widthof the side in the aXial' line thereof whereby the elements may be secured together with their bases or apeXes in registry or with their sides adjacent, the respective apertures being in registry in each case.

In testimony whereoi I have hereunto set my hand in presence of two witnesses.

CHARLES FREGONARAQ Witnesses JULIAN EMBLE FUE LEAY, JULIAN LinNoUGEs. 

